Printing press



June 39, 1923.

3,45%,312 c G.PRWCHARD I PRINTING PRESS Filed Sent. 22,

1919 2 Sheets-Sheet 1 June 19, 1923.

C. PRITCHARD .PRINTING PRESS Filed Sept, 22, 1919 2 Sheets-Sheet 2INVENTOR 657/! f fiufafdm".

ATTORNEY Patented Jam re. 1923;

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untranstares. earner err-ice,

CARL G. PRITCHARD, OF WARREN, OHIO, ASSIGNOR TO THE HARRIS AUTOMATICPRESS COMPANY, CLEVELAND, OHIO, A CORPORATION OF OHIO.

?BINTING PRESS.

Application filed September 22, 1919. Serial No. 825,335.

To allwiwm it may concern:

Be it lmown that I, CARL G. PRITCHARD, ,a citizen of the United States,and a resident of Warren, in the. county of Trumbull and a State of Ohiohave invented certain new and useful 7 Presses, of which the followingis a specification, reference beingmade t the'accoim palplying drawings,forming. a part thereof.

rotarymachines which print by an ofiset impression, and the primaryobJect of my invention is, among other thin s, to provide aprinting-press of this genera character ofa simple and efficientconstruction which press, through such offset printing, may be operatedeither to perfect theweb of paper by printing one color on each sidesimultaneousl ,or by changing the path of the web to t e press twocolors may be printed. on

a single surface of such web. My invention is also adapted in likemanner to print on bothsides" of separate sheets of paper, or two colorsupon one side of the separate sheets, also depending upon the point towhich such separate sheets are fed to the press. To accomplish suchadvantageous re- Sults I have arranged a series of five cylinders socombined and o erated connection with the feeding of eit er the web ofpaper or separate sheets to the press that a simple and eficientcombination perfecting. press and two color press is provided-in thesame machine, adaptedfor use with either a paper web or-s'eparate sheetsas may be desired. These and. other objects of my invention will behereinafter more clearly set forth, and the invention consists in thenovel arrangements, improvements and combinations of parts herein shownand described and particularly embodiedin the claims.

The accompanying drawings referred to herein illustrate separate.embodiments of the invention, the same serving in connection with thedescription herein to explain the principles of the invention.

Of the drawings, Figure 1 is a side elevation of my improved press'builtfor printin upon aweb of paper and showing as muc as dis necessary toillustrate my lnvention; an

Figure 2 is a similar side elevation view showing-a modified form of myinvention improvements in Printing.

I y invention=relates to printing-presses of the rotary type and moreparticularly to adapted for printing separate sheets, which may be fedtothe press in different paths according to the nature of the printingdesired.

Similar numerals refer to similar parts through the two figures.

Referring to the construction shown in Figure '1, the frame-work 3supports the bearings for the upper form-cylinder 4, the

upper transfer-cylinder 5 mounted in the eccentric bearings 6 and havingthe usual transfer surface or rubber blanket 7 suitably attachedthereto, the impression cylinder 8 havingthe rubber blanket 9 attachedthereto, the lower transfer-cylinder 10 also mounted in eccentricbearings 11 and having the rubber blanket 12 attached thereto,

known forms and need not be further described. The roll or web of paper16 is suitably mounted upon the framework -3 as upon the shaft 17 heldin the support 18, it

only being necessary that such roll 16 so rotatably mounted may unrollthe Web of paper in either direction. The platform 19 is arranged toprovide a stand for the operator to throw ed the transfer-cylinder 5 bymeans of the handle 20, while the platform 21 affords a similar stand tooperate the handle 22 which .actuates the eccentric bearings 11 to throwoil the transfer-cylinder. 10, such platform 21 also enabling theoperator to ave suitable access to the inking and water rollers on thelower form cylinder 13. 1

When the press is used to rfect the web by printing one color on eacliside simultaneously, suchweb 23 passes upwardly from the roll 16 asshown by the arrow around the guide rollers 24, 25 and 26, 'and is fedbetween the upper transfer-cylinder 5 and the impreion-cylinder 8 asshown, the cylinder 5 through its blanket 7 printing the designreceivedfrom the plate on the form-cylinder 4: upon the upper surface ofthe web 23,

while the under surface of the web receives its design from the blanket9 which is inked by the blanket 12 on the cylinder 10, the

' of webs.

blanket 12' receiving its design from the proper plate on the lowerform-cylinder 13, the impression-cylinder 8 receiving thereby are-transfer from the lower transfer-cylinder 10. When so used the designon the plate for the form-cylinder 13 is laid .on in reverse to takecare of the double transfer in rinting uponthe under surface of the web.

he perfected Web then passes through the delivery rolls 28. i

When the press is used to print two colors on'one side only of the web,such web 23 .is unrolled from the roll 16 in a clockwise direction andpasses to the left beneath the platform 21 as shown in dotted lines, andthen upwardly over the guide rollers 29 and 30 where it receives itsfirst color from the transfer-cylinder 10 and thereafter its secondcolor from the transfer-cylinder 5, the cylinders 5 and 10 formingsuccessive printing couples with the impression-cylinder 8. The web thenpasses through the delivery rolls 28 as hereinbefore described. In theconstruction illustrated in Figure 2 my improvement is shown in acombination perfecting and two color press adapted for the feeding ofseparate sheets instead In this modified construction the relativearrangement of the two form-cylinders 4 and 13, the twotransfer-cylinders 5 and 10 and the impression-cylinder 8 issubstantially the same as in the Figure 1 construction, and adescription of these members need not be repeated; the form-cylinders 4and 13 also have the same ink and water rollers 14 and 15 respectively,and the transfer-cylinders are each mounted in eccentric bearingsoperated by suitable han dles to throw off the impression; also thecylinders 5, 8 and 10 each carry rubber blankets or transfer surfaces sothat when used as a perfector the impression-cylinder 8 receives are-transfer from the lower transfer-cylinder 10 and deposits same uponthe under surface of the sheet. -Mounted upon the framework 3 is theupper feedtable 31 supporting the pile of sheets 32 thereon andprovided-with the feed-board 33 extending ina downwardly inclineddirection toward the bite of the cylinders 5 and 8, as shown. Similarlymounted upon the framework 3 is the lower feed-table 34 with its pile ofsheets 35 thereon and having the feed-board 36 extending below the lowerform-cylinder 13 into proximity with the under peripheral surface of thelower transfer-cylinder 10. The cylinders 8 and 10 are provided withsuitable grippers 37 and 38 respectively as shown, and a chain deliverymechanism 39 provided with grippers 40 is suitably attached to theframework 3 as shown.

From the foregoing it is obvious that.

when it is desired to perfect the separate sheets, the latter are placedupon the upper table 31 and fed between the cylinders 5 and 8, but whentwo colors are desired upon one side of the sheets the-latter are fedfrom the lower feed-table 34: to the grippers 38 on the cylinder 10 andthen the sheets are transferred to the grippers 37 on theimpression-cylinder 8, from which after such successive printing, thesheets are carried and deposited by the chain delivery mechanism 39.

From the foregoing it is obvious that a combination perfecting and twocolor press has been provided which embodies the objects of theinvention and advantages herein set forth, together with other objectsand advantages. My invention, in its broader aspects, is not limited tothe particular constructions and arrangement of cylinders shown, as manychanges may be made without departing from the main principles of theinvention and without sacrificing its chief advantages.

I claim as my invention 1. In a combination perfecting and two colorprinting-press, the combination of two form-cylinders, two coactingtransfer-cyL inders, each form cylinder impartingits design to itsrespective transfer-cylinder, an impression cylinder provided with atrans fer surface in printing relation with both said transfer-cylinderswhereby one of said transfer-cylinders may re-transfer its design tosaidimpression-cylinder, means for feeding an impression-receiving materialbetween the other of said transfer-cylinders and the impression-cylinderto perfect such material passing there-between, and separate means forfeeding an impression-receiving material between the firsttransfercylinder and the impression-cylinder to receive on the same sidethe respective designs of each transfer-cylinder.

"2. In a combination perfecting and two color printing-press, thecombination of two form-cylinders, two coacting transfer-c3 1 inders,each form cylinder imparting its design to its respectivetransfer-cylinder, an impression cylinder provided with a transfersurface in printing relation with both said transfer-cylinders wherebyone of said transfer-cylinders may re-transfer its design to saidimpression-cylinder, means for feeding an impression-receiving materialbetween the other of said transfer-cylinders and the impression-cylinderto perfect such material passing there-between, separate I means forfeeding an impression-receiving material between the firsttransfer-cylinder and the impression-cylinder to receive on the sameside the respective designs ofeach transfer-cylinder, and a singledelivery mechanism for receiving such material from theimpression-cylinder.

3. In a combination perfecting and two color printing-press, thecombination of two I said transfer-c pression-cylinder to print bothdesigns upon one side of such material, and separate means forfeedin'gan impression-receiving material between the impression-cylinder and theother transfer-cylinder.

4. In a combination perfecting and two color printing-press, thecombination of two form-cylinders, two coacting transfer-cylinders, eachform cylinder imparting its design to its respective transfer-cylinder,an impression cylinder rovided with a transfer surface in printingrelation with both said transfer-cylinders, means for feeding animpression-receivin' material first be tween one of said transer-cylinders and the impression-cylinder and then between the other ofsaid transfer-cylinders and the impression-cylinder to print bothdesigns upon one side of such material, separate means for feeding animpression-receiving material between the impression-cylinder and theother transfer-cylinder, and a single delivery mechanism for receivingsaid material at a common point.

5. In a combination perfecting andtwo color off-set printing press, twoform-cylinders, two coaeting' transfer-cylinders, an impression-cylinderhaving a transfer surface arranged in printing relation with both transer-cylinders, means for throwing off each transfer-cylinder from bothits formcylinder and impression-cylinder, meansfor feeding animpression-receiving material between the first transfer-cylinder andthe impression-cylinder, and separate means for feeding such material.between the impression cylinder and the other transfer-cylinder.

6.-In a combination perfecting and twocolor off-set printing press, twoform-cylinders, two coacting transfer-cylinders, an

impression-cylinder having a transfer sur-v face arranged in printingrelation with both transfer-cylinders,means for throwing oil" eachtransfer-cylinder from both its form-' cylinder and impression-cylinder,means for feeding an impression receiving material between the firsttransfer-cylinder and the impression-cylinder, separate means for feedinsuch material between the impression cy inder and the othertransfer-cylinder, and a single delivery mechanism for receivg Suchmaterial from said impression-j cylinder.v a

7. In a combination perfectin and twocolor offset printing press, twoorm-cylinders, two coacting transfer-cylinders, an1mpression-cylinderlhaving a transfer surface arran ed in. rintingrelation yvith both trans er-cylinders, means for fee inganimpression-receiving material bet een the 1mpression-cylinder andboth/ transfer-cylin'-- ders to receive both impressions on one side ofsaid material, separate means for feeding such material between theimpression-cylmder and one transfer-cylinder only to receivetransfer-cylinders to receive a lurality of designs upon one surfacevof-t e material, separate means for feeding such material to theimpresson-cylinder at adifferent point in its rotation to receive one ormore'designs on each side of such material, and a single deliverymechanism for receiving such material from the impression-cylinder.

9. In a combination perfecting and two'- color offset printing press,two form-cylinders, two coacting transfer-cylinders, animpression-cylinder having a transfer surface arranged in rintingrelation with both transfer-cylinders, means .for feeding animpression-receiving material between the impression-cylinder and bothtransfer-cylinders to receive both impressionsjon one side of saidmaterial, and separate meansfor feeding such material between theimpression-cylinder, and one transfer-cylinder only to receive a designon each side thereof. 7 10. In a combination perfecti and twocoloroffset printing press, a p urality of form-cylinders, a plurality ofcoacting transfer-cylinders, an impression-cylinder having a transfersurface arran ed in printing relation with said trans er-cylinders,means for feeding an impression-receiving material between theimpression-cylinder and the transfer-cylinders to receive a plurality ofdesigns upon one surface of the material, and. separate means forfeeding such material to the impression-cylinder at a different point inits rotation to receive one or more designs on each side of suchmaterial.

CARL G. PRITC'HARD

